aggregate expressions are not allowed in MOVE RELATION clauses

  Explanation:  You entered a MOVE RELATION clause that  contained
  an  aggregate  expression.   Only an operator, literal value, or
  field name are allowed in a MOVE RELATION clause.

  User Action:  Check the Replication Option for Rdb  Handbook  or
  the  RDO  Reference  Manual  for  details  on  the MOVE RELATION
  clause.  Reenter the DEFINE TRANSFER statement  with  a  correct
  MOVE RELATION clause.